Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-11-2024 16:47

General

  • Target

    Ok7YvjlVmDJI9ajz.exe

  • Size

    831KB

  • MD5

    f9f3ee35f62eba494f4f755850617a85

  • SHA1

    2f01785e036cb476d67249bef9881b0116912309

  • SHA256

    e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870

  • SHA512

    6a44351b520b9a6869b695d1fe31aadd73dc099358ada5ace0882d883b94ff83ae990b247fb68f9cbb09f12f8bacc3202e5f4a0c90a4c2bad218254d263a97e9

  • SSDEEP

    24576:zq0qvumN3gUCTcpVfFBbsuYqwnB5t7UG4DL:zqwmtgUZpVgpqwn17eDL

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

66.63.187.113:1664

Mutex

a376f716-2f77-4943-a431-3a3bcb53b7c0

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    66.63.187.113

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-08-05T03:49:33.827385136Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1664

  • default_group

    CAT

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    a376f716-2f77-4943-a431-3a3bcb53b7c0

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    66.63.187.113

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Nanocore family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ok7YvjlVmDJI9ajz.exe
    "C:\Users\Admin\AppData\Local\Temp\Ok7YvjlVmDJI9ajz.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Ok7YvjlVmDJI9ajz.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1080
    • C:\Users\Admin\AppData\Local\Temp\Ok7YvjlVmDJI9ajz.exe
      "C:\Users\Admin\AppData\Local\Temp\Ok7YvjlVmDJI9ajz.exe"
      2⤵
        PID:1824
      • C:\Users\Admin\AppData\Local\Temp\Ok7YvjlVmDJI9ajz.exe
        "C:\Users\Admin\AppData\Local\Temp\Ok7YvjlVmDJI9ajz.exe"
        2⤵
          PID:2632
        • C:\Users\Admin\AppData\Local\Temp\Ok7YvjlVmDJI9ajz.exe
          "C:\Users\Admin\AppData\Local\Temp\Ok7YvjlVmDJI9ajz.exe"
          2⤵
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in Program Files directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2828
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1613.tmp"
            3⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:3240
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp175C.tmp"
            3⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2812

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zctkxd0g.us2.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\tmp1613.tmp

        Filesize

        1KB

        MD5

        4ea138cb2ecf2fb5b38438dc3c790f80

        SHA1

        f55256f73ff2494340ae15f1f23c90909b1ebfc6

        SHA256

        10af088172232024fd1594dee8fbc0522db89e96ff82c0cb18cedee05f313e34

        SHA512

        ee08429536718fc194cc5a18a591b2d87874dbcff3782e689f8a3572d7c14b3cd3c16c1f755970cc8057fa8a486988bacc90f8b1e26007004a54ee0542cd4139

      • C:\Users\Admin\AppData\Local\Temp\tmp175C.tmp

        Filesize

        1KB

        MD5

        447ab194ab36cb1d20078d80e502b1b2

        SHA1

        a947b3b2c91d7c50bb8d39bd4fc91a0d0cc5b1c0

        SHA256

        8d5304b20b7d7dea223ce2738e5668054250d57bf6bed86b305b69924bd472f5

        SHA512

        49ddc557f7f6635627eea9bf0fa12a14b7b13edb235ed560ee0044a7f87fe27b686ff878d347d0273d92eb0b318b8c2bca85c0fbf42d586ed7d7da39eac6a327

      • memory/1080-41-0x0000000006230000-0x000000000627C000-memory.dmp

        Filesize

        304KB

      • memory/1080-85-0x0000000007870000-0x000000000788A000-memory.dmp

        Filesize

        104KB

      • memory/1080-86-0x0000000007850000-0x0000000007858000-memory.dmp

        Filesize

        32KB

      • memory/1080-84-0x0000000007770000-0x0000000007784000-memory.dmp

        Filesize

        80KB

      • memory/1080-83-0x0000000007760000-0x000000000776E000-memory.dmp

        Filesize

        56KB

      • memory/1080-77-0x0000000007730000-0x0000000007741000-memory.dmp

        Filesize

        68KB

      • memory/1080-76-0x00000000077B0000-0x0000000007846000-memory.dmp

        Filesize

        600KB

      • memory/1080-75-0x00000000075A0000-0x00000000075AA000-memory.dmp

        Filesize

        40KB

      • memory/1080-74-0x0000000007530000-0x000000000754A000-memory.dmp

        Filesize

        104KB

      • memory/1080-73-0x0000000007B70000-0x00000000081EA000-memory.dmp

        Filesize

        6.5MB

      • memory/1080-72-0x0000000007200000-0x00000000072A3000-memory.dmp

        Filesize

        652KB

      • memory/1080-15-0x0000000004C50000-0x0000000004C86000-memory.dmp

        Filesize

        216KB

      • memory/1080-16-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/1080-70-0x00000000071E0000-0x00000000071FE000-memory.dmp

        Filesize

        120KB

      • memory/1080-17-0x0000000005330000-0x0000000005958000-memory.dmp

        Filesize

        6.2MB

      • memory/1080-22-0x0000000005A60000-0x0000000005A82000-memory.dmp

        Filesize

        136KB

      • memory/1080-24-0x0000000005B00000-0x0000000005B66000-memory.dmp

        Filesize

        408KB

      • memory/1080-25-0x0000000005B70000-0x0000000005BD6000-memory.dmp

        Filesize

        408KB

      • memory/1080-60-0x00000000706E0000-0x000000007072C000-memory.dmp

        Filesize

        304KB

      • memory/1080-23-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/1080-35-0x0000000005BE0000-0x0000000005F34000-memory.dmp

        Filesize

        3.3MB

      • memory/1080-59-0x00000000071A0000-0x00000000071D2000-memory.dmp

        Filesize

        200KB

      • memory/1080-38-0x00000000061E0000-0x00000000061FE000-memory.dmp

        Filesize

        120KB

      • memory/1080-37-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/1080-89-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/1996-3-0x0000000005080000-0x0000000005112000-memory.dmp

        Filesize

        584KB

      • memory/1996-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

        Filesize

        4KB

      • memory/1996-4-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/1996-5-0x0000000005060000-0x000000000506A000-memory.dmp

        Filesize

        40KB

      • memory/1996-6-0x0000000005360000-0x00000000053FC000-memory.dmp

        Filesize

        624KB

      • memory/1996-2-0x0000000005730000-0x0000000005CD4000-memory.dmp

        Filesize

        5.6MB

      • memory/1996-7-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

        Filesize

        4KB

      • memory/1996-1-0x00000000005E0000-0x00000000006B6000-memory.dmp

        Filesize

        856KB

      • memory/1996-8-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/1996-9-0x0000000006350000-0x000000000636C000-memory.dmp

        Filesize

        112KB

      • memory/1996-10-0x0000000002970000-0x00000000029EA000-memory.dmp

        Filesize

        488KB

      • memory/1996-14-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/2828-57-0x0000000007180000-0x00000000071AE000-memory.dmp

        Filesize

        184KB

      • memory/2828-54-0x0000000007130000-0x0000000007140000-memory.dmp

        Filesize

        64KB

      • memory/2828-43-0x0000000005A70000-0x0000000005A7A000-memory.dmp

        Filesize

        40KB

      • memory/2828-48-0x00000000070B0000-0x00000000070C2000-memory.dmp

        Filesize

        72KB

      • memory/2828-52-0x0000000007110000-0x000000000711E000-memory.dmp

        Filesize

        56KB

      • memory/2828-18-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/2828-53-0x0000000007120000-0x0000000007134000-memory.dmp

        Filesize

        80KB

      • memory/2828-13-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/2828-11-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2828-91-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/2828-45-0x0000000006A90000-0x0000000006A9A000-memory.dmp

        Filesize

        40KB

      • memory/2828-56-0x0000000007170000-0x000000000717E000-memory.dmp

        Filesize

        56KB

      • memory/2828-58-0x00000000071B0000-0x00000000071C4000-memory.dmp

        Filesize

        80KB

      • memory/2828-49-0x00000000070C0000-0x00000000070DA000-memory.dmp

        Filesize

        104KB

      • memory/2828-44-0x0000000005D40000-0x0000000005D5E000-memory.dmp

        Filesize

        120KB

      • memory/2828-55-0x0000000007140000-0x0000000007154000-memory.dmp

        Filesize

        80KB

      • memory/2828-50-0x00000000070F0000-0x00000000070FE000-memory.dmp

        Filesize

        56KB

      • memory/2828-90-0x0000000074A70000-0x0000000075220000-memory.dmp

        Filesize

        7.7MB

      • memory/2828-51-0x0000000007100000-0x0000000007112000-memory.dmp

        Filesize

        72KB